Bun making machine



May 6 1947- l w. c. GRIMM TAL Re. 22,875

BUN MAKING MACHINE May 6, 1947- w. c. GRIMM ETA. Re. 22,875

BUN MAKING MACHINE .s` sheets-shet 2 Original Filed Jan. 6, 1945` um myI N VEN TORS /TTURNEKS May 6, 1947- n w. c. GRIMM ETAL Re. 22,875

BUN MAKING MACHINE- 3 sheets-sheet 3 Original Filed Jan. 6, 1942:.'

11" In winni Wai/1m] Mmm *22m/@gigs Reissued May 6, 1947 22,875 BUNMAKING MACHINE William C.

Jersey City,

Grimm and Richard H. Linneman,

N. J., assignors, by mesne assignments, to General Baking Company,

New York,

N. Y., a corporation of New York Original No. 2,354,681, dated SerialNo. 471,514, January 6, tion for reissue January 3,

17 Claims.

The present invention relates to dough handling and shaping machineryand, more particularlyI to such mechanisms adapted for forming, fromelongated rolls of dough, buns and the like particularly adapted forhuman consumption.

A general object of the present invention is the provision in suchmechanism of eiiicient means for forming a roll of dough and effectivelydelivering it in a certain defined path, and shearing` means associatedtherewith successively to cut buns of desired length from the roll ofdough in a sure and rapid manner which avoids unduly flattening,squeezing and misshaping them, whereby such buns of excellentshape canbe produced from dough batches entirely automatically in a very rapidand economical manner, thereby preserving the dough from excessivehandling, veliminating the necessity of employing skilled workmen andconserving time and skilled manpower.

A more specific object of the invention is the provision of suchmechanism characterized by a shearing device which operates so quicklyas to avoid undue interference with continuous travel oi a dough rolland undesirable bulging or swelling of the leading end thereof as bunsare severed therefrom, as `well as 'undesirable flattening or misshapingof the buns so that the latter suiliciently retain the desiredsubstantially cylindrical shape.

Another object of the invention is the provision in such mechanism ofcooperating shear blades so constructed and operated as to reach over amoving roll of dough, engage around it and swiftly shear through it,with a substantially encompassing action as distinguished from thebun-flattening and splaying shear of the roll which would result fromthe use of ordinary blades.

A further object of the invention is the provision in such machinery ofeflicientl driving means whereby a common source of power drives theroll forming and delivering mechanism at a predetermined speed and maydrive the shearing device at such coordinated but manually variablespeed as may be desired to form buns of a desired length and `permitalteration thereof at will without interfering with the speed of theroll forming and delivering means.

Still another object is the provision of a manually rcontrolled variablespeed drive for such shearing device; and means effectively to permitwith continuous operation of shear blades sunlciently slow movementbetween the shear-'completed and shear-preparatory positions thereofAugust 1, 1944, 1943. Applica- 1947, Serial No.

as to provide for unusually long rolls While providing sufficientlyrapid movement thereof from the latter position to the former duringshearing as eectively to avoid undue distortion of the roll and bunssevered therefrom. Other objects of the invention will in part beobvious and will in part appear hereinafter..

The invention accordingly comprises the features of construction,combination of elements and arrangement of parts, which will beexemplied in the construction hereinafter set forth and the scope of theinvention will be' indicated in the claims. For a fuller understandingof the nature and objects of the invention, reference should be had tothe following detailed description taken in connection with theaccompanying drawings, in which: f

Fig. l is a top plan view, with parts broken away and omitted forclarication, of an embodiment ofthe present invention;

Fig. 2 is a front elevational view, with parts broken away, of thestructure shown in Fig. 1;

Fig. 3 is an enlarged detailed elevational view, with parts broken away,of the dough coiling mechanism and dough roll shearing mechanismshown inFigs. l and 2;

Fig. 4 is an end elevational view, with parts broken away, of structureshown in Fig. 3 looking from right to left thereof;

Fig. 5 is an end elevational view, with parts broken away, of structureshown in Fig. 3 looking from left to right thereof;

Fig. 6 is an enlarged end elevational view of certain oi the drivingmechanism structure of the device shown in Figs. l and 2;

Fig. '7 is a front elevational view, with parts broken away, of a modiedform of the structure shown in Fig. 3;

Fig. 8 is an end elevational view, with parts broken away, of structureshown in Fig. 'l looking from right to left thereof;

Figs. 9 and 10 are views similar to Figs. 7 and 8 of a still furthermodified form of the present invention; and

Fig. 1l is a view similar to Figs. 8 and 10 of another modied form ofthe present invention.

Prior to the present invention many attempts have been made to devisemachinery to produce certain bakery products other than by skilledhands. These attempts have been unsuccessful and prior to the presentinvention no one yinsofar as is known in the commercial trade andpractical art proposed or suggested a practical mechanism capable ofeiilcient commercial op- .of the machine,

eration in the production of buns and the like from elongated rolls ofdough, more particularly cinnamon buns and similar products. As is wellknown some such products are commonly prepared by applying to surfacesof "and/or mixing into sheets of dough, desired additives such as oil,cinnamon, raisins, etc., coiling up the sheets into rolls and thereaftercutting relatively short sections from the rolls. Even the most skillfulof workmen can produce suchpproducts in only very limited quantities andwith the use of implements such as were available which resulted inmisshaped, flattened buns splayed at the ends requiring a reshaping handmanipulation. These and other difficulties of the prior art have beengreatly ameliorated if not entirely overcomeby the present inventionwhich permits rapid production in an entirely automatic manner ofwellshaped buns and like products.

An embodiment of the present invention shown by way of example in theaccompanying drawings is particularly designed for the employmentpreferably comprise a pair of depending shear blades mountedsubstantially above and over the defined path at a certain distancewhich will permit the blades to cooperate when at least the conveyingmeans and quickly she-ar through it with a substantially encompassingaction. This action is so performed that the continuous movement of thedough roll will not cause the leading end thereof to be bulged orswelled by being jammed against such shearing structure to any or degreeof any consequence.

on their, ends. In `the preferred embodiment vblades are mounted onoppositely rotating supporting structure to cause the blades to describecircles in opposite directions, with such mechavnism being preferablydriven through a variable .speed device from the source of poweremployed to operate the endless conveyor,v the coiling or roll formingdevice and any other mechanism such as the ingredients applicators.

The present invention will be readily understood by reference to theaccompanying drawings wherein a particular embodiment thereof is shownand like parts thereof are identified by like numerals throughout. Uponsuitable' supporting structure a pair of rolls I0, I il are rotatablymounted, preferably at about the same elevation, with their axesarranged horizontally. A table top Il or other substantially at supportis arranged between the rolls I0, Hl and over the top surfaces thereofan endless conveyor, such as a belt l2, is moved by the rolls l0, I0.Only one of these two rolls l0, I0 need be driven,

such as by a, sprocket i3, fixed preferably on the rolls and driven by aback end of one of the chain I 4 from a sprocket l5 fixed on a shaft I6carrying a sprocket Il in turn driven by a chain I8 from a sprocket I9fixed on a drive shaft 20 and belt, or sprocket and endless chain, apower source such as an electric motor (not shown). Certain of theseshafts, sprockets or chain drives may also be employed to operate othermechanism such as sheeting rolls and ingredients applicators in certain.definite relation to the speed and operation of the endless conveyor orbelt I2.

Upon the table top H is suitably mounted supporting plates 22 and 23arranged angularly to the length of the table. A coiling roll 24 isrotatably supported by the plates 22 and 23 slightly above the belt l2so that the latter may gle such as about 30 As shown in Figs. 2 away at25 in front to provide for free to the edge of the belt I2. and 4 endplate 23 is cut of the coiling roll 24 so as same direction as that inwhich the rolls l0, I0 revolve so that the surface of roll 24 opposestravlz therebeyond of a dough sheet carried by be t The shearingmechanism preferably comprises two shearing blades 34 and 35 which maybe mounted for rotation in opposite directions upon the support plate 23by fixing the outermost blade 34 to a shaft 3E rotatably mounted withina sleeve 31 in turn rotatably supported by the support plates 22 and 2The other blade 35 maybe iixedly mounted upon" the sleeve 3l so 36 mayproJect from the fixed to the back end of the "softest-the shaft will-bedriven Vfrom opposed faces sacre to drivev through 'a chain. 4i asprocket 42' keyed to the endo: the sleeve 31, so that as the chain 59drives theshaft 36 in one direction the sprocket: 42 will drive thesleeve 31 in the opposite direction. As shown in Fig. 4 each shear bladecomprises ja; portion 143 extendingv substantially radially 'from itssupporting means, such as the shaft 36 or the sleeve 31 es the case maybe, and an end portion 44 turned inwardly toward the other blade.Although such blades may be of any 'suitable shape in which theycooperate by encompassing Aa dough roll as they vare movedtoward eachother to shear the latter, they are preierably so -formed as to have theend portion 44 of each arranged substantially at a right vangle 'to theremaining portion 143. rIhe leading edges of these blades are preferablysharpened to provide a continuous cutting edge 45 on both portions 43and 44 and the inwardly turned portions 144, 44 are preferably Atapered'substantially lto a point so as readily to engage beneath .a doughIroll while it 'is being moved endwise by cooperation of the coi-lingroll 24 and the endless belt l2. v"The 'ommon axis 46 of lthe blades 34and 3511s preferably arranged substantiallyzlbove the definedpat'h alongwhichthe-dough roll 'is moved, at such a distance that the `inturnedportions 44, '44101 the blades 34 and 35 lwill lust clear'the uppersurface of the endless belt l2 or, if desired, lightly contact the sameas ends thereof move toward each other beneath the roll of dough to pickupthe latter.

lt is desired rto provide -for manual variation -of the speed ofoperation of the shear blades `within certain limits so that differentlengths of buns sheared from 'the lend Aof the roll of-dough moved at acertain speed along a defined `path beneaththe blades may be obtained atwill. This may be accomplishedby introducing between the main driveshaft 2l) andthe mechanism moving the blades "-34 and '-155 any suitableldevice which may be manually adjusted vfor speed variation. Suchmechanism lmay comprise-a shaft 41, driving chain '39, and to vwhichis'keyedva pulley 48 drivenby a belt 49 from a divided pulley struc-"tureA 59 keyed for rotation with a shaft structure 5l driven from theshaft 3| by any suitable means, such as gears 52'and 54 mounted thereonwith interposed pinions 453, 53 trained therewith shaft 3| in theopposite direction of rotation. The divided pulley structure 5D is ofknown construcl'tion and may comprise two plates biased toward each'other and 'peripherally chamfered on their to provide together'asubstantially V-shaped groove for reception of the belt 449. The `shaftassembly 5l for the divided pulley 5l! is supported by vanysuitablemeans permitting it to be moved farther away from the pulley 48 and maycomprise swinging supports 55, 55 against atleast one 'of vwhich 'may beoperated a hand screw LL'x'itl'lreadably mounted -in a fixed supportElse that the distance between the shafts 41 and "5 I may be increasedatwill to causel the 'two' plates of Vthe divided pulley 5B to beseparated, thereby decreasing the diameter of the working circle'thereof den'ed by Athe line of contact with the belt `49, thus toreduce the speed of the mechanism 'drivingthe shear blades. The speed ofthe latter maybe increased vby `permitting the shaft 5l to'movecloser-tothe shaft-41 such `as by the linfluence of suitable biasingmechanism, as spring means biasing the plates-of the divided pulley-5ttowardeach other.

finthe Yoperation fof the kdevice vjust described aa'elongated sheet ofdough may be continuously ted to the rotating belt l2 from the lefthandend of the table structure as shown in Figs. l and 2. Such elongatedsheet of dough, a'portion of which is shown at 58 will be carried pastany desired suitable ingredients applying mechanisms, such as a waterapplicator to wet down the near edge of the sheet of dough to increasethe desired adhesion ofthe rolled layers of dough, an applicator tospread oil on the upper surface of the dough sheet to prevent undesiredblending of dough layers, .a cinnamon spreader and, if desired, a raisindistributor to feed .such ingredients to the upper surface of the `doughsheet. The end of the dough Vsheet 58 then is fed to the ceiling roll 24at an oblique angle as shown in Fig. 1 and with the end 'of `the doughsheet properly fed to the coiling roll 24 the latter will spirally coilor `roll the dough sheet back continuously into a spiralled vroll 59which will 'be lgradually moved lengthwise by the cooperating.counter-movements of .belt l2 and roll 24, substantially inthedirection of the axis of roll 24 through the space 25 in the yend plate23, so that the shearing device will successively shear buns from the.end of the roll of dough as it moves away from in front of the cgilingroll-24.

It will be understood from Figs. 3, 4, 5 and 6 that as the ceiling rollMis rotated in aclockwise direction as there viewed, the outermostshearing blade 34 rotates in a l.countercloclrwise direction and theinnermost shearing blade 3,5 rotates clockwise so that as the .spiralleddough roll 59 moves through the space 25 the shearing blades 34 and 35are rotated to approach Veach other and engage 4their inturned portions44, 44 beneath the dough roll. Thereafter as .the shearing bladesapproach each other or `move from the shear- `preparatory ypositionsvshown .in Fig. 4 to shearcompassing action-thus avoiding tendency todistort unduly :the bunfsevered from the end of the spiralled'rollandtheroll itself.

The :speed of rotation of the .blades -34 and35,

`which Vis. determined `by the setting of the hand screw 56, determinesthe .lengths .of the A,buns which are severed from .the end of :theYSpiralled dough roll, moved -at a constant speed through the space 25-bycooperationof the coiling roll 24 Aand the conveying belt l2. .Itwill `be:understom however, Vthat the blades wise rotation willtendto'throw each bun as it is severed from the dough rollrtoward the centerof the conveying belt i2, rather -than'toward the nearedge thereof, foreicient kdeliversr from the end of the machine.

"Modifications of the invention are shown .in Figs. 7,8,9 and 110 Whereone of .thetwofshearing 'blades may be xedtothe .end platestructure23,orvother suitable supporting structure, withthe other :blade rotatedrelative thereto. iFor example,as shownin Figsg'l-ahd 8, a blade `134.may be loosely mounted on the end of shaft lizandbe caused to rotatetherewith v.by Such :means may `comprise a helical spring ,Ell disaboutthe suertes with .one endflxed to .the

.blade IM'and theother YAend .fixed to a collarll 7 keyed to the shaftfor rotation therewith. Blade |35 is suitably fixed to the support plate23 in position to cooperate with blade 34 but preferably in such aposition as to be slightly out of the normal path of the dough roll 59and buns may be successively severed from the end of the spiralled doughroll 59 by rotation of the shaft 36.

As further proposed in Figs. 7 and 8 the rotating blade |34 may becaused to travel through angular portions of its path at differentspeeds so that unusually long buns may be formed while assuringsuiliciently rapid operation of the shearing action to avoid undueswelling of the end of the dough roll. This may be accomplished withthe'use of the helical spring 60 and collar 6| providing a loosecoupling between the rotating blade |34 and the shaft 36 in associationwith a suitable blade checking device, such as a pin 62 reciprocativelymounted in a boss 63 on the end plate 23 and biased by a helical spring64 to an outward position across the path of the blade I 34. 'Ihus asthe blade |34 is slowly rotated to engagement with the end of the pin62, it is stopped in its movement by the latter in a shear-preparatoryposition. Continued rotation of the shaft 36 causes the helical spring60 to be wound up increasingly biasing the blade 34. Eventually thebiasing force of helical spring 6D will overcome the biasing force ofhelical spring 64 causing the blade |34 to move the pin 62 back out ofits path and thereafter permit the blade quickly to be carried forwardtoward the blade |35 to cooperate with the latter in picking up thedough roll 59, encompassing it and shearing through it at a relativelyrapid speed.

Instead of depending entirely upon a careful selection of dimension ofparts and spring stock in structure such as that shown in Figs. 7 and 8to predetermine with a fair degree of accuracy the moment at which theblade |34 releases itself from the shear-preparatory position, astructure :similar to that proposed in Figs. 9 and 10 may lbe utilizedwherein a moving blade 234 is provided with a, boss 65 in which isloosely received v.the end of the rotating shaft 36. The latter isfitted with a pin 66 transversely extending therethrough with the endsthereof located in diametrically opposed slots 61, 61 in the boss 65 forlimiting the angular movement of the blade 234 relative to the shaft 36.In such structure the blade 234 may be biased to a leading position bysprings such as 68, 68 and a device for temporarily holding the blade234 in a shear-preparatory position may be similar to the pin structure62 shown in Fig. 7. Accordingly as the blade 234 is moved to abutagainst the pin 62 the latter will stop the blade 234 and temporarilyhold it during continued rotation of the shaft 36 until the pin 6 in theslot 61, 61 assumes a Fig. 10. Pin 62 will then be retracted permittingblade 234 to be rapidly carried forward by action of the highly stressedsprings 68, 68.

A structure similar to that shown in Figs. 9 and 10 is compact and welladapted with slight variations to permit such mounting of one or both ofa, pair of revolving shearing blades. In such case, of course, theoutermost blade must be temporarily stopped by a suitable structuremounted from the outside so that it will not interfere with theoperation or complete rotation of the inner blade.

It will further be understood that the shearing blades may be oscillatedback and forth from shear-preparatory positions to shear-completedVpositions and vice versa instead of being completely rotated. Such amodication is proposed in Fig. 11 where each of shearing b1ades334'and335 is provided with an arm 69 having an elond slot 1l) therein toreceive arider such as a pin 1| xed on the end of a crank arm 12suitably rotated by a shaft 13. Continuous rotation of the shafts 13, 13and the crank arms 12, 12 therewith will thus cause the shearing blades334 and 335 to be oscillated back and forth and, if desired, theshearing blades may be mounted at 14 by suitable carriage means so thatthey will move forward roll 59 during their movement shear through theshear-preparatory positions to the shear-completed positions, severinga, bun from the end oi the dough roll. f

Although a preferred embodiment of the present invention has beendevised for eiiicient employment in connection with the production ofedible buns it is obvious that the use thereof, or

present invention.

It will thus be seen that the objects set forth above are attained in aneiiicient manner and which. as a matter of langauge, fall therebetween.

passing action.

3. In a bun making machine, the combination with means to move anelongated roll of dough g a defined path subntiaily in' the direction ofits; axis, ofy a roll shearing device comprising a pair oi dependingshear blades pivotally mounted at a common axis substantially above thedefined path, each. blade having the. lower end portion thereof turnedvinwardly towardthe other blade to engage beneath such roll, and means topivot said blades toward each other so as; to engage the end portionsthere.- of beneath the roll, pick up the latter and shear through itwith a substantially encompassing action, without substantially checkingthe contmued movement of said roll of dough 4. In a bun making machine,the combination with means to move an elongated roll of dough lengthwisealong a defined path substantially in the direction of its axis, of aroll shearing device comprising a. pair of depending shear bladesmounted substantially above. the defined path. each blade having thelower end portion thereof turned inwardly toward the other bladesubstantially at a right angle to the remaining: portion oil the. bladeto engage beneath such roll, both ot said portions of each blade beingprovided with a cutting edge, and means to move at least one 0i saidblades toward the other so as to engage the end portions thereof beneaththe roll and shear through it with a substantially encompassing action.

5. In a bun making machine, the combination with means to move an.elongated roll of dough lengthwise along a deiined path substantially inthe direction of its axis, a roll shearing device comprising a pairy ofdepending shear blades pivotally mounted above the defined path, eachblade having the lower end portion thereof turned inwardly toward theother blade. to engage beneath such roll, and means to rotate saidblades about their common axis in opposite directions with the endportions thereof leading so as to engage the latter beneath the roll,pick it up and shear through it with a substantially encompassingaction.

6. In a bun making machine,l the combination comprising, elongated rollof, dough substantially about its axis and moving it: during rotationlengthwise generally along a delined path substantially in the directionof` its axis, and a roll shearing device comprising a pair of dependingshear blades mounted substantially above the defined path of the rotatedroll, each blade having the lower end portion thereof turned inwardlytoward the other blade to engage beneath the rotated roll, and means tomove at least one of said blades toward the other so as to engage theend portions thereof beneath the roll, pick up the latter and shearthrough it with substantially encompassing action while it is beingrotated.

'7. In a bun making machine, the combination comprising, means forcontinuously rotating an elongated roll of dough substantially about itsaxis and moving it during rotation lengthwise generally along a definedpath substantially in the direction of its axis, and a roll shearingdevice comprising a pair of depending shear blades mounted substantiallyabove the path of the rotated roll, each blade having the lower endportion thereof turned inwardly toward the other blade to engage beneaththe rotated roll, and means to move said blades toward each other so asto engage the end portions thereof beneath the rotated roll, pick up thelatter and shear through it with a substantially encompassing actionwhile it is being rotated.

at a. commony axis substantially means for continuously rotating an f8.. In a bun making machine, the combination comprising, means forcontinuously rotating an elongated roll of dough substantially about itsaxis and moving it' during rotation lengthwise generally along a definedpath substantially 'm the direction of its axis, and a roll shearingdevice comprising a pair of depending shear blades pivotally mounted ata common axis substantially above the path of the rotated roll, eachblade having the lower end portion thereof turned inwardly toward theother blade to engage beneath the rotated roll, and means to pivot saidblades. toward each other so as to engage the end portions thereofbeneath the rotated roll, pick up the latter and shear through it with asubstan-A tiallyencompassing action while it is being rctated.

9. In a bun making machine, the combination comprising, means forcontinuously rotating an elongated roll of dough substantially aboutyits axis and moving it during rotationv lengthwise generally along a.defined path substantially in the direction of its axis, and a rollshearing device comprising a pair oi depending shear blades mountedsubstantially above the path of the rotatedv roll, each blade having thelower end portion thereof turned inwardly toward the other bladesubstantially at a right angle to the remaining portion of the blade toengage beneath the rotated roll, both of said portions of each bladebeing provided with a cutting edge, and means to move at least one ofsaid blades toward the other so as to engage the end portions thereofbeneath the rotated roll and shear through it with a substantiallyencompassing action while it is beingv rotated.

lll. In a bun making machine., the combination comprising, means forcontinuously rotating an elongated roll of dough substantially about itsaxis and moving it during rotation lengthwise generally along a definedpath substantially in the direction of its axis, and a roll shearing'device comprising a pair of dependingshear blades pivotally mounted ata common axis substantially above the path of the rotated roll, eachblade having a substantially radially extending portion and a taperedend portion extending therefrom substantially at a right angle theretotoward the other blade to engage beneath the rotated roll, each bladebeing provided on both portions thereof with a continuous cutting edge,and means to pivot said blades toward each other so as to engage the endportions thereof beneath the rotated roll, pick up the latter and shearthrough it with a substantially encompassing action while it is beingrotated.

1i. In a bun making machine, the combination comprising, means forcontinuously rotating an elongated roll of dough substantially about itsaxis` and moving it during rotation lengthwise generally along a denedpath substantially in they direction of its axis., and a, roll shearingdevice comprising a pair of depending shear blades pivotally mounted ata common axis substantially above the path of the rotated roll, eachblade having the lower end portion thereof turned inwardly toward therotated roll, and means to rotate said blades about their common axis inopposite directions with the end portions thereof leading so as toengage the latter beneath the rotated roll, pick up the latterand shearthrough it with a substantially encompassing action while it is beingrotated.

l2. In a bun making machine, the combination the other blade to engagebeneath v 11 with means to move an .elongated Vroll of dough toward theother to she lengthwise along a dened path substantially in bunscomprising driven the direction of its axis, of a roll shearing deone ofsaid shear blades, vice comprising a shaft rotatably mounted subsaidblade to a leading an stantially above the defined path with the axis ofdriven means, and means the former located substantially parallel to therarily to hold said blade latter, a sleeve rotatably mounted about saidposition While said driven the other mounted on said sleeve for rotarymovetion, said blade engaging m thereof turned inwardly toward eachother to completed position at an angular speed greater engage beneathsuch roll, and means to rotate than the angular speed of said drivenmeans.

said shaft and said sleeve in opposite directions 16. In a bun makingmachine, the combination so as to move said blades toward each otherwith means to move an elongated roll of dough across the defined path.lengthwise along a defined path substantially in a 13. In a bun makingmachine, the combination the direction of its axis, said meanscomprising with means to move an elongated roll of dough a conveyorhaving a, dough-supporting surface lengthwise along a defined pathsubstantially in structure, of a roll shearing device comprising aformer located substantially parallel to the latter, blade having alower end portion thereof turned a. sleeve rotatably mounted about saidshaft, a inwardly toward the other blade to engage bepair of shearblades with one mounted on said neath the roll, and means to move atleast one vof shaft for rotary movement thereby and the other saidblades toward the other so as to engage the thereby, said blades whensubstantially dependlatter from said conveyor surface structure and ingfrom their common axis in shear-preparatory shear through the roll witha substantially enpositions having the lower end portions thereofcompassng action.

to engage beneath such roll, and means to rotate lengthwise along adefined path substantially in 40 and adaptedfsubstantially to clear saidbelt, each `1`4. In a bun making machine the combination blade having alower end portion thereof turned with means to move an elongated roll ofdough inwardly toward the other blade :to engage belengthwise along adefined path substantially in neath the roll, and means to move at leastone of the direction of its axis, of a roll shearing device said bladestoward the other so as to engage the comprising a pair of dependingshear blades end portions thereof beneath the rOlL Pick up mountedsubstantially above the defined path, .the latter from said belt andshear through the and means to move at least one of said blades rollwith a substantially encompassing action.

toward the other to shear the roll into separate WILLIAM C. GRIMM.buns'comprising variable speed means to move RICHARD H. LINNEMAN. saidblade from shear-completed position to shear-preparatory position at aselected rate ofV REFERENCES CITED Speed to determine length of buns andmeans to The following references are of record in the move said bladlefrom shear-preparatory position me of this patent; e to-shear-comp etedposition at a relativel fast rate of speed.V y UNITED sTATEs PATENTS 15.In a bun making machine the combination Number Name Date with means tomove an elongated roll of dough 2,337,539 Buechek Dec. 28, 1943lengthwise along a defined path substantially in the vdirection of itsaxis, of a roll shearing device FOREIGN PATENTS comprising a pair ofdepending shear blades Number Country Date mounted substantially abovethe defined path, 208,153 British Mar. 5, 1923 and means to move atleast one of said blades

